Add skeletton for profile page

frontend/src/app/Services/bot.service.ts

@@ -0,0 +1,31 @@
+import { HttpClient, HttpHeaders } from '@angular/common/http';
+import { Injectable } from '@angular/core';
+import { Observable } from 'rxjs';
+import { TokenStorageService } from './token.service';
+
+const API_URL = 'https://gruppe1.testsites.info/api/';
+
+@Injectable({
+  providedIn: 'root',
+})
+export class BotService {
+  constructor(
+    private http: HttpClient,
+    private tokenStorage: TokenStorageService
+  ) {}
+
+  /**
+   * @param  {string} telegramUserID
+   * @returns Observable
+   */
+  public createTransaction(telegram_user_id: string): Observable<any> {
+    return this.http.post(API_URL + 'telegram', {
+      headers: new HttpHeaders({
+        'Content-Type': 'application/json',
+        Authorization: 'Bearer ' + this.tokenStorage.getToken(),
+      }),
+      responseType: 'text',
+      telegram_user_id,
+    });
+  }
+}